The engine for the GTX is known as the EcoTec, and has been in the GM family for quite some time. The engines we are recommending were produced as 2.2 and 2.4 liter engines. Many have variable valve timing. All are electronic fuel injection, with coil packs on the spark plugs. Three induction systems were used in the 2006 thru 2010 period. They were normal aspirated, turbo charged and a limited number with belt driven superchargers. Flywheel horsepower ranges between 165 and over 300.
We do not recommend the supercharged version. It was only produced with a standard transmission. We did not intend for the GTX to have a manual transmission so it is uncertain if that combination would fit. We also would not be able to provide a correct wire harness. For those who may want to try such an installation we suggest you call and talk to Jason at our technical partner S&S Automotive.